Probing into Why Anisotropic Nanoclay Offers Better Reinforcement in Natural Rubber Than Isotropic Nano Zinc Oxide by Determining Their Interaction With Sol And Gel Fractions

Koushik Banerjee | Soumya Ghosh Chowdhury | Sreedip Ghosh | Jagannath Chanda| Sanjay Kumar Bhattacharyya| Rabindra Mukhopadhyay | Abhijit Bandyopadhyay2

Hari Shankar Singhania Elastomer and Tyre Research Institute, Mysuru, Karnataka, India 2Department of Polymer Science & Technology, University of Calcutta, 92, A.P.C. Road, Kolkata-700009, West Bengal, India


In this research work, the influence of sol-gel interplay with anisotropic nanoclay in raw natural rubber (NR) for providing improved mechanical reinforcement than isotropic nano zinc oxide was investigated in-depth. For the purpose of experiments, four different grades of NR were selected with similar Mooney viscosity but dissimilar gel fractions (toluene insoluble fraction), along with the commercially available Cloisite 30B and nano zinc oxide as the nanofillers.